The fear will never go away completely, but it does become a more comfortable fear the more you get used to certain features.

The best thing you can do is make sure you master the tricks you're trying to learn on smaller, un-scary features first, then take the same trick to larger features that scare you only when the trick has become second nature to execute.

Doing this usually means it's still scary, but having the trick 100% committed to your muscle memory means you should still be able to pull it off first try and that immediately starts lowering the amount of fear you feel the next time you hit the same feature.

It's all about getting that muscle memory dialled in so your body automatically goes through the motions even if you're scared.